android - 如何在android中录制音频并上传到服务器？如何使用文档附件限制特定的文件扩展名？

Question

我正在使用与 whatsapp 相同的 android 附件。我可以通过相机拍照、图库选项、位置、录制视频。我坚持使用两个选项，

1. 如何录制音频？

点击音频按钮时，我使用了以下代码，

        audioIB.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
            startActivityForResult(intent, 6);

        }
    });

并且正在重定向到录制音频但在文件保存后它没有重定向到 Activity 。onActivityResult 中的代码是什么。

1. 我如何在附加文件时限制特定的文件扩展名，我需要选择 doc、txt、pdf、音频文件。其余的我不想附加。我尝试了很多但我做不到.Please help me asp.This is my code after you mentioned link using,以下代码我一直在使用，

   private void showFileChooser() 
   {
   
    Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    //        intent.setType("application/*");
   
     intent.setType("application/pdf|application/doc|appl‌​ication/docm|applica‌​tion/docx|applicatio‌​n/dot|application/mc‌​w|application/rtf" + "|application/pages|application/odt|application/ott");
     intent.addCategory(Intent.CATEGORY_OPENABLE);
   
       try 
       {
        startActivityForResult(
                Intent.createChooser(intent, "Select a File to Upload"),
                4);
        } 
        catch (android.content.ActivityNotFoundException ex) {
         Toast.makeText(getActivity(), "Please install a File Manager.",
               Toast.LENGTH_SHORT).show();
       }
   }
   

Answer 1

对于音频录制，通常正常的 Intent MediaStore.Audio.Media.RECORD_SOUND_ACTION 将用于录制音频并将路径返回到 onActivityResult() 中的 Activity 方法。

为此，这是示例代码。

 int RQS_RECORDING = 1;
 Intent intent = new Intent(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
 startActivityForResult(intent, RQS_RECORDING);

在您的 OnActivityResult() 中，您的代码将是这样的，

 @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode == RQS_RECORDING){

    if(resultCode == Activity.RESULT_OK){

        // Great! User has recorded and saved the audio file

             if(data!=null) 
             {
             String  savedUri = data.getData();

            Log.d("debug" , "Record Path:" + savedUri);

          Toast.makeText(MainActivity.this,
                "Saved: " + result,
                Toast.LENGTH_LONG).show();
             }

    }
    if (resultCode == Activity.RESULT_CANCELED) {
        // Oops! User has canceled the recording
    }
  }  
 }

但是不，它不适用于所有情况，并且某些设备(离体 V3 等)记录已保存，但不会返回任何数据，即(数据为空)和某些设备一些其他选项也在录音中(如删除、重试、播放、暂停等)，我们可能也不需要。

因此，除了默认 Intent 之外，您还可以使用 MediaRecorder 创建自定义 Recording，如下所示。

示例代码。

AudioRecordActivity.Class

 public class AudioRecordActivity extends AppCompatActivity {

    Button buttonStart, buttonStop ;
    String AudioSavePathInDevice = null;
    MediaRecorder mediaRecorder ;
    Random random ;
    String RandomAudioFileName = "ABCDEFGHIJKLMNOP";
    public static final int RequestPermissionCode = 1;
    MediaPlayer mediaPlayer ;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.audio_record_activity);

        buttonStart = (Button) findViewById(R.id.button);
        buttonStop = (Button) findViewById(R.id.button2);
        buttonStop.setEnabled(false);

        random = new Random();

        buttonStart.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                if(checkPermission()) {

                    AudioSavePathInDevice =
                            Environment.getExternalStorageDirectory().getAbsolutePath() + "/" +
                                    CreateRandomAudioFileName(5) + "AudioRecording.3gp";

                    MediaRecorderReady();

                    try {
                        mediaRecorder.prepare();
                        mediaRecorder.start();
                    } catch (IllegalStateException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }

                    buttonStart.setEnabled(false);
                    buttonStop.setEnabled(true);

                    Toast.makeText(AudioRecordActivity.this, "Recording started",
                            Toast.LENGTH_LONG).show();
                } else {
                    requestPermission();
                }

            }
        });

        buttonStop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mediaRecorder.stop();
                buttonStop.setEnabled(false);
                buttonStart.setEnabled(true);

                Toast.makeText(AudioRecordActivity.this, "Recording Completed",
                        Toast.LENGTH_LONG).show();

                Intent returnIntent = new Intent();
                returnIntent.putExtra("result",AudioSavePathInDevice);
                setResult(Activity.RESULT_OK,returnIntent);
                finish();

            }
        });

    }

    public void MediaRecorderReady(){
        mediaRecorder=new MediaRecorder();
        mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        mediaRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB);
        mediaRecorder.setOutputFile(AudioSavePathInDevice);
    }

    public String CreateRandomAudioFileName(int string){
        StringBuilder stringBuilder = new StringBuilder( string );
        int i = 0 ;
        while(i < string ) {
            stringBuilder.append(RandomAudioFileName.
                    charAt(random.nextInt(RandomAudioFileName.length())));

            i++ ;
        }
        return stringBuilder.toString();
    }

    private void requestPermission() {
        ActivityCompat.requestPermissions(AudioRecordActivity.this, new
                String[]{WRITE_EXTERNAL_STORAGE, RECORD_AUDIO}, RequestPermissionCode);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode,
                                           String permissions[], int[] grantResults) {
        switch (requestCode) {
            case RequestPermissionCode:
                if (grantResults.length> 0) {
                    boolean StoragePermission = grantResults[0] ==
                            PackageManager.PERMISSION_GRANTED;
                    boolean RecordPermission = grantResults[1] ==
                            PackageManager.PERMISSION_GRANTED;

                    if (StoragePermission && RecordPermission) {
                        Toast.makeText(AudioRecordActivity.this, "Permission Granted",
                                Toast.LENGTH_LONG).show();
                    } else {
                        Toast.makeText(AudioRecordActivity.this,"Permission Denied",Toast.LENGTH_LONG).show();
                    }
                }
                break;
        }
    }

    public boolean checkPermission() {
        int result = ContextCompat.checkSelfPermission(getApplicationContext(),
                WRITE_EXTERNAL_STORAGE);
        int result1 = ContextCompat.checkSelfPermission(getApplicationContext(),
                RECORD_AUDIO);
        return result == PackageManager.PERMISSION_GRANTED &&
                result1 == PackageManager.PERMISSION_GRANTED;
    }
}

audio_record_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="40dp"
    android:paddingLeft="40dp"
    android:paddingRight="40dp"
    android:paddingTop="40dp">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/imageView"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:src="@mipmap/ic_launcher_round"/>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Record"
        android:id="@+id/button"
        android:layout_below="@+id/imageView"
        android:layout_alignParentLeft="true"
        android:layout_marginTop="37dp"
        />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="STOP"
        android:id="@+id/button2"
        android:layout_alignTop="@+id/button"
        android:layout_centerHorizontal="true"
        />

</RelativeLayout>

AndroidManifest.xml

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.STORAGE" />

因此，无论您想在哪里录制音频/声音，您都可以简单地使用下面的代码，并在结果 Activity 中返回您保存的路径。

int RQS_RECORDING = 1;
Intent intent = new Intent(MainActivity.this , AudioRecordActivity.class);
startActivityForResult(intent, RQS_RECORDING);

OnActivityResult() 会是这样

  @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        if(requestCode == RQS_RECORDING){

            if(resultCode == Activity.RESULT_OK){

                // Great! User has recorded and saved the audio file
                String result=data.getStringExtra("result");

                Toast.makeText(MainActivity.this,
                        "Saved: " + result,
                        Toast.LENGTH_LONG).show();

               Log.d("debug" , "Saved Path::" + result);


            }
            if (resultCode == Activity.RESULT_CANCELED) {
                // Oops! User has canceled the recording / back button
            }

        }

    }

这是一个示例代码，您可以根据自己的需要自定义您的要求。

This是一个提供记录控制的库

对于第二个问题，我已经给出了 link ，你可以像下面这样使用。

private void browseDocuments(){

    String[] mimeTypes =
            {"application/msword","application/vnd.openxmlformats-officedocument.wordprocessingml.document", // .doc & .docx
                    "application/vnd.ms-powerpoint","application/vnd.openxmlformats-officedocument.presentationml.presentation", // .ppt & .pptx
                    "application/vnd.ms-excel","application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", // .xls & .xlsx
                    "text/plain",
                    "application/pdf",
                    "application/zip"};

    Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        intent.setType(mimeTypes.length == 1 ? mimeTypes[0] : "*/*");
        if (mimeTypes.length > 0) {
            intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
        }
    } else {
        String mimeTypesStr = "";
        for (String mimeType : mimeTypes) {
            mimeTypesStr += mimeType + "|";
        }
        intent.setType(mimeTypesStr.substring(0,mimeTypesStr.length() - 1));
    }
    startActivityForResult(Intent.createChooser(intent,"ChooseFile"), REQUEST_CODE_DOC);

}